Cleaning staff workers toss pieces of papers during a protest at Barcelona's airport on Tuesday. Cleaning staff working for a company who have a contract with the airport demonstrated against pay and benefits cuts made by their employer.

Albert Gea / Reuters

Passengers line up in front of check-in desks during a protest by the cleaning staff at Barcelona's airport.

Alberto Estevez / EPA

A woman carries her luggage on an escalator at the Terminal 1 of El Prat airport in Barcelona.